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CVE-2023-22524

CriticalPublished

Certain versions of the Atlassian Companion App for MacOS were affected by a remote code execution vulnerability. An attacker could utilize WebSockets to...

Published: Dec 6, 2023
Updated: Feb 25, 2026
Assigning CNA: atlassian
Evidence observed: Aug 8, 2026

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS probability estimate

24.7%

Moderate · next 30 days

Percentile: 97.8%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Certain versions of the Atlassian Companion App for MacOS were affected by a remote code execution vulnerability. An attacker could utilize WebSockets to bypass Atlassian Companion’s blocklist and MacOS Gatekeeper to allow execution of code.

Sources

CVE-2023-22524PoC
Proof-of-concept exploit for CVE-2023-22524, a remote code execution vulnerability in Atlassian Companion for macOS, demonstrating bypass of blocklist and Gatekeeper.
CVE-2023-22524PoC
Atlassian Companion RCE Vulnerability Proof of Concept

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